Im going to be swapping my 92 drivetrain into my new supra to build for a drag car and the turbo is on its last legs. So Trying to decide my upgrade path for it. I was thinking about a upgraded CT, for the very fast spool. But was also thinking maybe a T4 would be better for reliability and long term goals. But not sure when the spool... so if you have a 60-1 62-1 or a 60 trim t4 or something close post when you get 15 psi by?